- #1
fab13
- 312
- 6
I am trying to estimate the distance of closest galaxy neighbor knowing the expression of number of neighbors into a volume ##\text{d}V##, the mean density ##n_\text{gal}## and the correlation function, i.e with this expression :
##\text{d}N=n_{\text{gal}}\,\text{d}V\,(1+\xi(r))##
with ##\xi(r)=\bigg(\dfrac{r}{r_{0}}\bigg)^{-\gamma}\quad\text{with}\quad\gamma\,\sim\,1.77 \quad\text{and}\,r_{0}\,\sim\,5\,\text{Mpc}##.
I take into my calculation the following value for ##n_{\text{gal}}=0.0420\,\text{h}^{-3}\,\text{Mpc}^{-3}##
How could I infer the distance of the closest galaxy from us ?
Regards
##\text{d}N=n_{\text{gal}}\,\text{d}V\,(1+\xi(r))##
with ##\xi(r)=\bigg(\dfrac{r}{r_{0}}\bigg)^{-\gamma}\quad\text{with}\quad\gamma\,\sim\,1.77 \quad\text{and}\,r_{0}\,\sim\,5\,\text{Mpc}##.
I take into my calculation the following value for ##n_{\text{gal}}=0.0420\,\text{h}^{-3}\,\text{Mpc}^{-3}##
How could I infer the distance of the closest galaxy from us ?
Regards
Last edited: